Think Sendou's "wild instincts" that somehow let him steamroll characters who put Ippo through hell would be able to compensate for the monkey boy's super powers?

If not, then who can beat him? Or even touch him? (Itagaki is an obvious choice.. Genius gary stu no in fighter can touch.)

Dark-Kenshin

Sendou crushes him badly. Wild instincts lets you adapt like Takamura did against Hawk.

Moreover, as you'll find out around the 1000th chapter, the Ippo you're seeing is nowhere near the optimal version of the character. As far as I'm concerned, Ippo-prime was the Ippo who beat Karasawa. That Ippo may very well have wrecked Woli's sh-t in one round. This "everybody and their uncle tapdances on my face" version is pitiful. Two if he doesn't just destroy him with 100% strength punches.